Engine-mounting for airships.



A. CLEMENT. I ENGINE MOUNTING'POR AIRSHIPS.

1,00,494' APPLICATION FILED FEB. s, 1909. Patented Aug. 15 1911.

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I lnrlllmlum A. CLEMENT. ENGINE MOUNTING FOB AIRSHIPS.

APPLICATION FILED FEB. 8, 1909.

Patented Aug. 15, 1911.

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UNITED STATES PATENT OFFICE.

ADOLPHE- CLEMENT, or LEVALLOIS-PERRET, FRANCE.

ENGINE-MOUNTING FOR AIRSHIPS.

Specification of Letters Patent.

Patented Aug. 15, 1911.

Application filed February 6, 1909. Serial Nansen.

vibrations communicated by a moving mech-- anism to its support are inversely proportionate to the mass of this support. Now as in a dirigible balloon or an aeroplane the mass of the car must not be increased but on the contrary attempts must'be made to reduce it as much as possible, it is of the greatest importance that the vibrations of the motor should not be communicated to the car. It should be noted that these vibrations are of two kinds; there are first of all the shocks arising from the sudden'variation of the motor couple, which arises when an explosion motor misses fire, and then the vibrations produced by the imperfect bal-' ancing of the motor, these latter vibrations taking place continuously in normal running. r

The system which forms the-subject of this invention has for its object to reduce or even eliminate these various defects almost completely. '-It consists in absorbing or: deadening these shocks and vibrations by elastic means which may be variously'arranged, several embodiments being illustrated in the accompanying drawing.

The accompanying drawings embodiments of the invention. I

.Figures '1 and 2 are respectively an end view and plan of one form of the apparatus; Fig. 3 is'an-end view of another form; Figs. 4 and 5'are respectively an end view and plan 'of a third form.

The device, represented in side elevation in Fig. 1 and in plan in Fig. 2 is sufficient for diminishing the shocks-due to the variations "of the couple of motors with 6 or 8 cylinders, the balancing of which is almost perfect and which consequently transmit hardly any vibrations. in supporting the motor M by two bearings P concentric with the axis of the crank.

are fixed to the motor shaft. These bearin supportmg the motor.

itself or to a frame illustrate This means consists I this motor couple which An arm A rigidly connected with the whole 1s connected with the fittings B of the car through the interr'nediation of a spring R the tension of which can be regulated in ac- 5 cordance with requirements by means of a screw threaded rod (1 provided with a hand Wheel or a crank.- This spring R yields under the influence of the motor couple. It

may be pointed out that the fiexure of this 5 might serve for the measurement of might be useful for certain experiments. The arm A is firmly connected with'the motor by rigid rods 6 spring and restswupon the projection 0 when the motor is not running.

When the motor comprlses a smaller number of cylinders, such as four for example, so v that the balancing is less perfect, it is desirable to interpose (as shown in a modification illustrated in Fig.3) springs D between the supports of the bearings P and the frame B of the car, these springs absorbing the constant vibration of the motor during its normal running which vibrations arise from defective balancing. In order that the springs thus interposed between the-bearings and the parts of the frame of the car may b? exceedingly flexible and capable of easy P free ends of these springs with a shoe is which rests on a slide-way d permitting of free displacement; the other end of the spring is fixed in'a lug. If found advantageous, movable shoes might be provided at bothextremities of the sprlngs.

Figs. 4 and 5 represent in side elevation and in plan an arrangement in' which the motor is carriedbya chassis which, instead of resting on the car, G the ends of which are connected by jointed uprights of the framework. By means of this arrangement the shocks arising from misfiring and vibrations occurring in norother is utilized, thereby rendering the flex- 110 ures aperiodic as far as possible. I It-is also possible to arrange. at any suitit is advisable to provide one of the 85 rest-s upon leaf springs 95 means of a connecting g able place shock absorbing devices utilizing friction, a liquid, air or other appropriate means, as indicated diagrammatically in Fig. 4 at H, for the purpose of perfecting the aperiodicity if necessary. f WhatI claim and desire to secure by Letters Patent of the United States is 1. The combination of a motor frame of an air vehicle, with a motor carried by said frame, said motor having a shaft, bearings for said shaft concentric therewith and connecting the same to said frame, and an additional connection between said motor and vlframe comprising an arm on the motor and 15.,

a buffer spring between the end of said arm and a part of said frame for absorbing shocks due to variations in the motor couple. f'

2. The combination of a motor frame of an air vehicle, with a motor carried by said frame, said motor having a shaft, bearings for said shaft concentric therewith and connecting the same to said frame, and an additional connection between said motor and frame comprising an arm on the motor and a buffer spring between the end of said arm and a part of. sald frame for absorbing I. I Witnesses shocks due to variations'in the motor cofnple,

4.;1The combination ofa motor frame of I an airvehicle, with a motor carried by said frame, a shaft for said motor, bearings for said shaft, leaf springs connecting said bearings with said frame, an arm on the motor, and a bufler spring between said arm and said frame for absorbing shocks due to variations in the motor couple, and means for adjusting the strength of said spring.

4 In Witness whereof, I have hereunto signed my name in the presence of two subscribing Witnesses.

ADOLPHE CLEMENT.

JULES'ARMENGAUD, Jeune, ELLWOOD AUSTIN WELDEN. 

